Pedestal-extension-table lock.



PATENTED JULY 11, 1905.

E. TYDEN. PEDESTAL EXTENSION TABLE LOOK.

Patented July 11, 1905.

PATENT OFFICE.

EMIL TYDEN, OF HASTINGS, MICHIGAN.

PEDESTAL-EXTENSION-TABLE LOCK.

SPECIFICATION forming part of Letters Patent No. 794,204, dated July 11,1905.

Application filed August 1, 1904. Serial No. 219,142.

To all whmn it may concern:

Be it known that I, EMIL TYDEN, a citizen of the United States, residingat Hastings, in the county of Barry and State of Michigan, have inventednew and useful Improvements in Pedestal-Extension-Table Locks, of whichthe following is a specification, reference being had to theaccompanying drawings, forming a part thereof.

This invention relates to means for locking together the separable partsof a pedestal extension-table, and particularly preventing the pedestalmembers from sagging apart at one end.

It consists in the features of construction set out in the claims.

In the drawings, Figure 1 is a longitudinal vertical section through themiddle portion of a table embodying this invention, the two membersbeing shown in closed and locked position. Fig. 2 is a similar viewshowing the parts engaged at the lower end of the pedestal and preparedfor closing up at the top. Fig. 3 is a section at the line 3 3 onFig. 1. Fig. 4 is a section at the line 4 4 on Fig. 1.

The two members 1 1 of the table comprise and have rigid with them therespective pedestal members 2 and 2, which may inclose a center leg 3,carried in the usual manner by the cross-bar 4. On one pedestal memberthere is at each side a rigid guide and lifting finger 5, said fingersbeing tapered at the outer surface and upper edge, so as to be guidedinto the opposite pedestal member under the abutments or stops 6 6,mounted on the corresponding sides of said opposite pedestal members. Onone pedestal mem ber there is carried a forked foot-piece 7, whichstrides the lower end of the center leg 3 and may have upon eachfork-arm a pulley or caster 8 for pressing upon the floor substan tiallyin the meeting plane of the two pedestal members. This foot-piece has astem 9,

which extends upward within the pedestal member on which it is mounted,being guided in an eye 10 near the bottom, and at the upper end it isconnected with the horizontal arm of a bell-crank lever 1 1, which has afixed fulcrum on the table and has its vertical arm upstanding andconnected by a link 12 with a hand-lever 13, said hand-lever beingfulcrumed at its upper end close under the tabletop and depending fromits fulcrum, so as to be in convenient reach for operating the devicefor pulling and pushing its lower end. At the lower end of the pedestala latch 14, preferably duplicated at opposite sides of the center leg,is pivoted on the same member on which the foot-piece is mounted. Theselatches extend above the fork-arms of said foot-piece, and the oppositepedestal member has suitable means which the hook-noses of the duplicatelatches engage for connecting the pedestal members at the bottom. Aconvenient device for this purpose consists of a plate 15, fastened uponthe lower end of the pedestal and having a projecting stud or finger 16for the engagement of the latch. At the upper end of the pedestal thereis a forklatch having its two arms 14 14 striding the center leg and onthe opposite pedestal member staples or eyes 17 17 for the engagement ofsuch upper latch. The latches, both uper and lower, are checked, so thatthey do not fall below about a horizontal position,

- this being most conveniently done by a short projection 18, extendingoff from the latch at its pivot and stopped against the pivotbracket 19,and a similarly-operating projection (also indicated by the numeral 18of each of the lower latches is stopped against the pivot-bracket of thelatch. For lifting the upper latch 14 out of engagement with the staple17 a pin 21 is set through the stem 9 of the foot-piece below said upperlatch 14. The fork-arms of the foot-piece have each a projecting pin 2020 in position to engage under the lower latches 14, respectively, whenthe foot-piece is lifted.

The operation of this device is that when the table members having beenextended are pushed together in the usual manner if there is the usualtendency to sag, so as to cause the edestal members to diverge fromabove downwardly, the table members will come together first at the top;but the fingers 5 will engage under the stops 6, the separation of thepedestal members at the bottom being usually not to exceed one-fourth ofan inch in the worst case. The operator will now push I00 thelever-handle 13 inward, thereby thrusting down the foot-piece andlifting both pedestal members at their inner side or parting plane, thefingers 5, engaging under the abut ments 6, servlng to transmit the liftfrom the member on which the foot-piece is mounted to the other member.This action will tend to cause the pedestal members to diverge from thebottom upward. It may bring them together at the bottom, in which casethe bottom latch will become engaged; but if not the operator will nowcontinue to push on the lever-handle 13, pushing the table memberstogether until the lower latch is en aged. Then releasing the handle,the weight of the table will cause it to settle again at the center, andthe two members being fulcrumed upon each other at their engagement atthe lower latch will come together at the top and the upper latch willbe engaged. For extending the table the operator will pull thelever-handle 13 outward and in so doing will lift the foot-piece and itsstem 9 until the pins 20 and 21 encounter and lift the latches 14, andthe operator continuing to ull on the handle 13 in the same direction wilseparate the table members.

I claim 1. In a pedestal extension-table, in combination with theseparable members of the table comprising their respective pedestalmembers, devices for connecting the pedestal members at the lower art;means mounted on one of the pedesta members adapted to be depressedrelatively thereto for lifting the table at the middle, adapted topermit the table to be depressed after said lower end connecting devicesare engaged, and separate devices for connecting the table members atthe upper part.

2. In a edestal extension-table, in combination wit the separablemembers, comprising their respective pedestal members,automatically-engaging devicesfor connecting the pedestal members at thefoot; means mounted on one edestal member ada ted to be depressed reatively thereto for ti ting said member slightly to lift it at theparting plane; means by which such member lifts the opposite member whenthe two members are near together and the first member is thus lifted,said lifting means being adapted to permit the table to be depressed atthe middle after the connecting devices are engaged at the bottom, andseparate devicesfor connecting the table members at the upperpart.

3. In a pedestal extension-table, in combination with the se arablemembers of the table comprising t eir respective pedestal members, meansmounted upon one pedestal member adapted to be depressed at will forlifting such member at the parting lane and thereby tilting it slightly;means y which such' lifting movement is communicated from said member tothe opposite member when the two members are near together;automatically-engaging devices for connecting the two pedestal membersat the bottom when they meet at the bottom; separate devices forconnecting the table members at the upper part, the movable element ofboth said upper and lower connecting devices being mounted on the sametable member which has the lifting device.

4. In a pedestal extension-table, in combination with the separablemembers of the table and the pedestal parts pertaining theretorespectively; means for connecting the pedestal members at the lowerpart; means for connecting them also at the upper part; a foot-piecemounted on one pedestal member, and means for thrusting such foot piecedownward relatively to the pedestal, to lift the table at the partingplane.

5. In a pedestal extension-table, in combination with the separablemembers of the table and the pedestal members pertaining theretorespectively; rigid abutments on the two pedestal members adapted tocome into engagement, those upon one member above those of the othermember as the pedestal members approach; a foot-piece mounted on themember whose abutments engage under those of the opposite member; meansfor thrusting said foot-support downward at will to lift the table atthe center, and catches for engaging the two members at the upper andlower parts of the pedestal.

6. In a pedestal extension-table, in combination with the separablemembers of the table and the pedestal members pertaining theretorespectively; a foot-piece mounted upon one pedestal member; aconnection extending upward from said foot-piece for raising andlowering it lever connections mounted under the table-top for operatingsaid means comprising a hand-lever and adapted to thrust the foot-piecedownward by inward push of the hand-lever; catches for connecting thetwo pedestal members at top and bottom, and means by which theupwardly-extending foot-piece connection disen 'ages the latches whenl'fted by outward pu of the hand-lever.

7. In a pedestal extension-table in combination with the separablemembers of the table and the pedestal parts pertaining theretorespectively; a latch connecting the pedestal members at the u per partand a latch connecting them at tl f mounted on one pedestal member andadapted to be thrust downward relatively to the edestal to lift thetable at the parting plane; ever connections mounted under the tabletopand connections extending upwardly from the foot-piece to said leverconnections, and abutments on said upwardly-extending part engagingunder the latches to lift them when the foot-piece is lifted by saidconnection.

e lower part; a foot-piece.

8. In a pedestal extension-table, in combination with the separablemembers of the table and the pedestal members pertaining theretorespectively; a foot-piece mounted on one pedestal member having a stemextending upwardly in said member; lever connections mounted under thetable-top in the same member for o eratin said foot-piece to thrust itdown and lift it; latches pivoted on the same member and means on theopposite member for engagement of the latches, the

stem of the foot-piece having means encountering the latches to liftthem When the footpiece is lifted.

In testimony whereof I have hereunto set my hand, inthe presence of tWoWitnesses, at Hastings, Michigan, this 16th day of July,

EMIL TYDEN. Witnesses:

A. 0. BROWN, F. W. STEBBrNs.

